DSpace Collection:https://dspace.lboro.ac.uk/2134/28972015-03-03T22:45:47Z2015-03-03T22:45:47ZDelivering fluxes of reactive species of cold atmospheric-pressure plasmas through the electrode sheath regionYang, AijunWang, Xing-ZhenRong, Ming-ZheLiu, Ding-XinWang, Xiao-HuaIza, FelipeKong, Michael G.https://dspace.lboro.ac.uk/2134/164092014-12-01T15:55:43Z2012-01-01T00:00:00ZTitle: Delivering fluxes of reactive species of cold atmospheric-pressure plasmas through the electrode sheath region
Authors: Yang, Aijun; Wang, Xing-Zhen; Rong, Ming-Zhe; Liu, Ding-Xin; Wang, Xiao-Hua; Iza, Felipe; Kong, Michael G.
Abstract: Cold atmospheric-pressure plasmas have received much attention; mainly rely on the potential use of reactive species generated in such plasmas. In most cases of application, such as plasma medicine, the reactive species have effects on a sample only after their penetration through the plasma sheath that is formed above the sample. In contrast to studies of generation and optimization of reactive species with the plasma itself, much less research has been reported on delivering of reactive species through the sheath region...
Description: This conference paper was presented at the 2012 IEEE International Conference on Plasma Science (ICOPS), held in Edinburgh in July 2012.2012-01-01T00:00:00ZGeneration and loss of reactive oxygen species in low-temperature atmospheric-pressure RF He+O2+H2O plasmaMcKay, KirstyLiu, Ding-XinRong, Ming-ZheIza, FelipeKong, Michael G.https://dspace.lboro.ac.uk/2134/164082014-12-01T15:45:12Z2012-01-01T00:00:00ZTitle: Generation and loss of reactive oxygen species in low-temperature atmospheric-pressure RF He+O2+H2O plasma
Authors: McKay, Kirsty; Liu, Ding-Xin; Rong, Ming-Zhe; Iza, Felipe; Kong, Michael G.
Abstract: This study focuses on the generation and loss of reactive oxygen species (ROS) in lowtemperature
atmospheric‐pressure rf (13.56MHz) He+O2+H2O plasmas, which are of
interest for many biomedical applications. Pure He+O2 plasmas are a good source of ozone,
singlet oxygen and atomic oxygen, with densities of these species increasing as oxygen
content increases1. He+H2O plasmas offer an interesting alternative to He+O2 plasmas as a
source of reactive oxygen species (ROS), and they produce significant amounts of hydrogen
peroxide, hydroxyl radicals and hydroperoxyl radicals, which increase with increasing water
content2. Admixtures of O2 and H2O lead to richer cocktails of ROS that combine all these
species.
Description: This conference paper was presented at the 2012 IEEE International Conference on Plasma Science (ICOPS), held in Edinburgh in July 2012.2012-01-01T00:00:00ZChemical pathways governing the production of Reactive Oxygen Species (ROS) in atmospheric pressure He+O2+H2O plasmasMcKay, KirstyLiu, Ding-XinRong, Ming-ZheIza, FelipeKong, Michael G.https://dspace.lboro.ac.uk/2134/164072014-12-01T15:27:13Z2012-01-01T00:00:00ZTitle: Chemical pathways governing the production of Reactive Oxygen Species (ROS) in atmospheric pressure He+O2+H2O plasmas
Authors: McKay, Kirsty; Liu, Ding-Xin; Rong, Ming-Zhe; Iza, Felipe; Kong, Michael G.
Abstract: It is well-known that atmospheric-pressure plasmas can be engineered to produce reactive
oxygen species (ROS) and reactive nitrogen species (RNS) known to play important roles in
biological systems. Here we concentrate on the generation of ROS, and in particular on the
chemical pathways that govern the generation and loss of ROS in atmospheric pressure rf
(13.56MHZ) plasmas sustained in helium with admixtures of O2 and H2O.
Description: This conference paper was presented at The 4th International Conference on Plasma Medicine (ICPM4) held in Orleans, France in June 2012.2012-01-01T00:00:00ZComparative study of chemical probes for ozone detectionCastello, C.Buckley, Benjamin R.Iza, Felipehttps://dspace.lboro.ac.uk/2134/164062014-12-01T15:08:17Z2014-01-01T00:00:00ZTitle: Comparative study of chemical probes for ozone detection
Authors: Castello, C.; Buckley, Benjamin R.; Iza, Felipe
Abstract: Plasma composition is typically studied by absorption and emission spectroscopy, mass spectrometry and computational studies. While these techniques
provide valuable information about the chemical species in the gas phase, in many applications it is desirable to have a direct measurement of the dose of
chemical species delivered to a particular target. For this purpose, chemical probes are particularly interesting as they can provide an inexpensive means for
determining the dose of a particular compound.
A number of chemical probes have recently been used by the plasma community, particularly those working in plasma medicine and with plasmas interacting
with liquids. Generally, however, these probes were not initially intended for use in plasma environments and therefore, it is important to assess their
suitability and identify any selectivity issue that could affect the correct interpretation of the measurements. Here, we report on a comparative study of three
chemical probes aimed at the quantitative detection of ozone (Table 1): Indigo Carmine and two DCF-derived fluorescent probes.
Description: This poster was presented at the Gas/Plasma-Liquid Interface: Transport, Chemistry and Fundamental Data Workshop August 2014.2014-01-01T00:00:00Z